M-SR20KE05-1X/力士樂(lè)單向閥，德國(guó)REXROTH全新原裝進(jìn)口品牌備件，產(chǎn)品質(zhì)量保證，大量現(xiàn)貨庫(kù)存，特價(jià)促銷，低價(jià)銷售；
上海韋米機(jī)電設(shè)備有限公司
雷 青（Mr） 手機(jī)Cel:13524123009（微信號(hào)）
電話Tel：021-61116913 傳真Fax：021-51334670
微信QQ：2896079243
電郵E-mail：leiqing@wei-mi.com
地址Add：上海市浦東新區(qū)金豫路100號(hào)禹洲金橋國(guó)際2期2號(hào)樓907室
主營(yíng)品牌：博世力士樂(lè)（BOSCH-REXROTH）及安沃馳AVENTICS、迪普馬DUPLOMATIC、愛爾泰克AIRTEC、本特利BENTLY、貝加萊B&R、世格ASCO、阿托斯ATOS、派克PARKER、威格士VICKERS。
方向控制按用途分為單向閥和換向閥。單向閥：只允許流體在管道中單向接通，反向即切斷。換向閥：改變不同管路間的通、斷關(guān)系。根據(jù)閥芯在閥體中的工作位置數(shù)分兩位、三位等；根據(jù)所控制的通道數(shù)分兩通、三通、四通、五通等；根據(jù)閥芯驅(qū)動(dòng)方式分手動(dòng)，機(jī)動(dòng)，電動(dòng)，液動(dòng)等。圖2為三位四通換向閥的工作原理。P 為供油口，O 為回油口，A 、B 是通向執(zhí)行元件的輸出口。當(dāng)閥芯處?kù)吨形粫r(shí)，全部油口切斷，執(zhí)行元件不動(dòng)；當(dāng)閥芯移到右位時(shí)，P 與A 通，B 與O 通；當(dāng)閥芯移到左位時(shí)，P 與B 通，A 與O 通。這樣，執(zhí)行元件就能作正、反向運(yùn)動(dòng)。
單向閥又稱止回閥或逆止閥。用于液壓系統(tǒng)中防止油流反向流動(dòng),或者用于氣動(dòng)系統(tǒng)中防止壓縮空氣逆向流動(dòng)。
單向閥Check Valve
單向閥又稱止回閥或逆止閥。用于液壓系統(tǒng)中防止油流反向流動(dòng),或者用于氣動(dòng)系統(tǒng)中防止壓縮空氣逆向流動(dòng)。
單向閥有直通式和直角式兩種。直通式單向閥用螺紋連接安裝在管路上。直角式單向閥有螺紋連接、板式連接和法蘭連接三種形式。液控單向閥也稱閉鎖閥或保壓閥，它與單向閥相同，用以防止油液反向流動(dòng)。但在液壓回路中需要油流反向流動(dòng)時(shí)又可利用控制油壓，打開單向閥，使油流在兩個(gè)方向都可流動(dòng)。液控單向閥采用錐形閥芯，因此密封性能好。在要求封閉油路時(shí)，可用此閥作為油路的單向鎖緊而起保壓作用。液控單向閥控制油的泄漏方式有內(nèi)泄式和外泄式二種。在油流反向出口無(wú)背壓的油路中可用內(nèi)泄式；否則需用外泄式，以降低控制油壓力。
M-SR20KE05-1X/力士樂(lè)單向閥
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M-SR20KE05-1X/力士樂(lè)單向閥
單向閥是流體只能沿一個(gè)方向流通，另一方向不能通過(guò)的閥。單向閥就是止回閥 止回閥只供防止各類管路或設(shè)備上流體介質(zhì)逆流的單向啟閉閥。 止回閥用途廣泛，有很多種類，下面說(shuō)的是供水和熱力常用的止回閥： 1、彈簧式：液體由下而上，依靠壓力頂起彈簧控制的閥瓣，壓力消失后，彈簧力將閥瓣壓下，封閉液體倒流。常用于通徑較小的止回閥。 2、重力式：和彈簧式相似，依靠閥瓣的自身重力封閉，防止倒流。 3、旋啟式：液體在閥體內(nèi)直通，依靠壓力頂開一側(cè)的旋轉(zhuǎn)閥瓣，壓力失去后，閥瓣依靠自重回位，反向的液體壓力封閉閥瓣。 其它的單向閥（止回閥），如排污的止回閥，人防的防爆閥和液體使用的止回閥的原理是大同小異
M-SR20KE05-1X/力士樂(lè)單向閥
力士樂(lè)REXROTH插裝式單向閥M-SR 6...30
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R901280323 M-SR8KE05-1X=
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R901349180 M-SR8KE15-1X=
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R901324291 M-SR8KE30-1X=
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M-SR20KE05-1X/力士樂(lè)單向閥
